Tool for air pressure release bars of elevator doors



March 31, 1942. 'G.,A. KLEINPELL 2,278,111

' TOOL FOR AIR PRESSURE RELEASE BARS OF ELEVATOR DOORS I Filed March 12, 1941 Inventor awenla 4 If/03 k? A iidrney Patented Mar. 31, 1942 2 UNITED STATES PATENT OFFICE TOOL FOR AIR PRESSURE RELEASE BARS F ELEVATOR DOORS 1 Claim.

The present invention relates to new and useful improvements in tools designed primarily for use in connection with air pressure controlled elevator doors to enable the operator to release the lock of the door should the same become jammed, or should the lock for the door fail to function for any reason. v

More specifically, the invention comprises an emergency tool adapted to be manipulated by the operator of the elevator to engage the lock hook for the air pressure release bar that controls the opening of the doorwhereby to release the 'hook to enable the door to be opened by hand.

A further object of the invention is to provide a tool of this character having illuminating means at the end thereof to facilitate prompt engagement of the tool with the lock hook of the elevator.

An additional object is to provide a device of this character of simple and practical construction, which is efficient in performance, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout, and in which Figure 1 is a side elevational View,

Figure 2 is a longitudinal sectional view through the outer end of the casing for the batteries and lamp for illuminating the end of the tool,

Figure 3 is a fragmentary longitudinal sectional view showing the telescopic connection for the sections of the tool, and

Figure 4 is a sectional view taken on a line 4-4 of Figure 3.

Referring now to the drawing in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a tubular shank having one end of a rod 6 slidably mounted therein and limited in its outward movement by a pin 1 carried by the shank 5 and engaged in a longitudinal groove 4 in the rod, the groove having a stop 3 at its inner end. The outer end of the rod 6 is formed with a handle 8.

Projecting laterally from one side of the tube 5, adjacent its outer end, is an arm 9, one end of the arm being welded or otherwise fixedly secured to the tube 5 as shown at Ill and. the other end of the arm being curved with its end portion extending substantially in parallelism to the tube 5 and in spaced relation therefrom, the ends of the tube 5 and arm 9 terminating substantially in a common plane.

A pair of flashlight batteries H are shown mounted in the outer end of the tube 5 and engaging an electric lamp l2 which is mounted in a socket [3, the socket including a reflector portion 14 which is threaded in the end of the tube 5 and in which the lamp I2 is supported. The outer end of the reflector is provided with an out-turned flange 15 which engages the end portion of the tube 5.

The base of the inner battery H is engaged by a contact I6 to which a circuit wire I! is attached and leading upwardly through the rod 6 for connection to a switch 18 secured adjacent the handle 8. The contact 16 is yieldably urged in engagement with the battery by means of a coil spring l9 which abuts a washer 20 secured in the tubular member 5 by means of a ring 2| soldered or otherwise secured inside the tool.

In certain types of elevators, the doors of the shaft affording access to the elevator are controlled by a pivoted lock hook and it frequently happens that the mechanism for opening the doors fails to function and prevents opening movement of the door. In such instances the elevator operator may extend the tool forming the subject matter of the invention through an opening in the car to engage the lock hook for the purpose of releasing the same and the doors may then be actuated by hand to open the same.

It is believed the details of construction, manner of use and advantages of the device will be readily understood from the foregoing without further detailed explanation.

Having thus described the invention, what I claim is A tool of the class described comprising a tubular member, a rod telescopically mounted in one end of the member, means for limiting the telescopic movement of the rod relative to the member, a handle at the inner end of the rod, an arm projecting laterally from the member adjacent its outer end and curved in the direction of said outer end of the shank to form a U-shaped hook at one side of the shank adapted to receive a lock-hook of an elevator door mechanism for releasing the same, an electric lamp mounted in the outer end of the member, said lamp being included in an electric circuit contained in the member, and a switch for the lamp carried by the rod adjacent the handle.

GWENDOLYN A. KLEINPELL. 

